BEST SUMS are a great way to help you choose your Mega Millions lottery numbers. If too high or too low, you're reducing your chances of winning. So, it's helpful to know what the BEST SUMS of your numbers should be. MEGA MILLIONS BEST SUMS for Tuesday and Friday help to give the answer. The Best Sums for each of these Nights are listed from Most Drawn to Least Drawn. The last time the Sum was drawn is also indicated. You'll find that some Sums prefer one night over the other. The SUMS are based on the five regular numbers.